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2. Detection of dipeptidase, polypeptidase, carboxypeptidase and esterase in different snake venoms;Ghosh;J. Indian Chem. Soc.,1939
3. Über die Cholinesterase der Schlangengifte;Zeller;Helv. Chim. Acta,1949
4. Cholinesterase and anticholinesterase activities in snake venoms;Chang;J. Formosan Med. Assoc.,1955
5. A modified spectrophotometric determination of chymotrypsin, trypsin and thrombin;Hummel;Canad. J. Biochem. Physiol.,1959